I put the dual Tanabe Hiper M on mine 4 cyl accord ( Sold my Accord for RSX ), can't feel any lose hps, anyway, accord is not that fast.... no need to worry about too much.
http://community.webshots.com/photo/37982129/41033913rPIqPF
http://community.webshots.com/photo/37982129/41033913rPIqPF